
Mary Anne O'Connell, Business Attorney in St Louis, Missouri
Over 44 years of legal practice · focused on Business, General, and M&A · 5.0/5 rating from 1 verified client review
PartneratHusch Blackwell LLP
St Louis, MO
Practicing business in St Louis since 1982.
- 44+
- Years practicing
- 5.0 ★
- 1 client review
- 2
- Bar admissions
Are you Mary Anne O'Connell?
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Quick answer
Mary Anne O'Connell is a partner based in St. Louis, MO. The practice focuses on Business, General, and M&A. Mary has over 44 years of legal experience. Currently practicing at Husch Blackwell LLP. Rated 5.0 out of 5 from 1 client review.
- Based in
- St. Louis, MO
- Experience
- over 44 years
- Known for
- Business · General · M&A
- Handles Business, General, and M&A matters from St. Louis, MO.
- Over 44 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About Mary Anne O'Connell: Mary Anne O'Connell is a partner based in St. Louis, MO. The practice focuses on Business, General, and M&A. Mary has over 44 years of legal experience. Currently practicing at Husch Blackwell LLP. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Mary's practice areas in St Louis
Mary concentrates on business, general, and m&a. Each area below outlines the kind of case Mary handles, typical outcomes to expect, and how the intake process starts.
Business cases in St Louis, Missouri
Mary takes business matters in St Louis, Missouri. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mary agrees to represent you.
General cases in St Louis, Missouri
Mary takes general matters in St Louis, Missouri. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mary agrees to represent you.
M&A cases in St Louis, Missouri
Mary takes m&a matters in St Louis, Missouri. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mary agrees to represent you.
Biography
Mary Anne O'Connell, business attorney serving St Louis
Mary Anne O'Connell is a partner based in St. Louis, MO. The practice focuses on Business, General, and M&A. Mary has over 44 years of legal experience. Currently practicing at Husch Blackwell LLP. Rated 5.0 out of 5 from 1 client review. Mary works from St Louis, Missouri and takes on business matters across the region.
Mary Anne O'Connell is a lawyer practicing technology, manufacturing & transportation, financial services and 6 other areas of law. Mary received a B.A. degree from Saint Louis University in 1973, and has been licensed for 44 years. Mary practices at Husch Blackwell LLP in St. Louis, MO.
How Mary handles business matters
Mary Anne O'Connell is a lawyer practicing technology, manufacturing & transportation, financial services and 6 other areas of law. Mary received a B.A. degree from Saint Louis University in 1973, and has been licensed for 44 years. Mary practices at Husch Blackwell LLP in St. Louis, MO.
The kind of cases Mary takes
Mary reviews new inquiries case-by-case for business, general, and m&a matters in St Louis and the surrounding Missouri area.
Credentials
Credentials — where Mary studied and practices
University of Missouri-Kansas City School of Law J.D. with distinction University of Missouri-Kansas City School of Law J.D. 1982 UMKC Law Review University of Missouri-Kansas City School of
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Saint Louis University
B.A. English · 1973
Jurisdictions
Mary's state bar admissions
Kansas
1984 · ACTIVE
Missouri
1982 · ACTIVE
Mary studied at — in University of Missouri-Kansas City School of Law J.D. with distinction University of Missouri-Kansas City School of Law J.D. 1982 UMKC Law Review University of Missouri-Kansas City School of and B.A. English in Saint Louis University.
Law school and academic background
Mary completed — in University of Missouri-Kansas City School of Law J.D. with distinction University of Missouri-Kansas City School of Law J.D. 1982 UMKC Law Review University of Missouri-Kansas City School of and B.A. English in Saint Louis University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Mary runs in Missouri is where that training gets applied to real client questions.
Recognition
Mary's legal honors and published work
Mary has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Affiliations
Mary's professional memberships and bar associations
Professional Associations and Memberships •The Missouri Bar •The American Bar Association - Business Law Section
membership
Locations
Mary Anne O'Connell's office in St. Louis
Mary's primary office is at 190 Carondelet Plaza, Suite 600, St. Louis, MO, 63105-3441. In-person meetings are by appointment; a phone intake usually comes first.
Husch Blackwell LLP
190 Carondelet Plaza, Suite 600
St. Louis, MO 63105-3441
Open in Google MapsClient feedback
Client reviews of Mary Anne O'Connell — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of Mary. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing business attorneys in St Louis.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Mary Anne O'Connell claims this profile.
Read all reviewsHiring guide
How to hire Mary Anne O'Connell — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Mary usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Mary charges for the initial consult. That fee is credited toward representation if you retain Mary's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Mary will tell you what matters and what doesn't.
Questions to ask a business attorney in St Louis, Missouri
A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Mary
Mary discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Mary confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Mary's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Mary Anne O'Connell
How much does it cost to hire Mary for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Mary walks through the likely range during the consult so there are no surprises.
Does Mary offer a free consultation?
Mary charges for the initial consult; that fee is credited toward representation if you retain Mary's office. Some business attorneys offer free consults — check Mary's current terms during booking.
How long do business cases in Missouri typically take?
Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Mary gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Mary take my case if I'm outside St Louis?
Mary is licensed in Missouri. Matters governed by Missouri law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Mary will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Mary?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Mary will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Mary accepting new business clients right now?
Mary's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving St Louis, Jefferson City and Kansas City in Missouri
Mary handles business matters throughout Missouri. Each city below is a direct link into the search page for verified business attorneys in that community.
More counsel
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If Mary's intake is full or the fit isn't right, these business attorneys in St Louis handle similar matters. Every profile below is verified and open to consultations.